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Aleksandr-060686 [28]
3 years ago
11

-3(5x + 7) + 2x – 3 = 5.x - 8 - 13​

Mathematics
2 answers:
ratelena [41]3 years ago
8 0

Answer:

x=-7

Step-by-step explanation:

Simplifying

3(x + -2) = 5x + 8

Reorder the terms:

3(-2 + x) = 5x + 8

(-2 * 3 + x * 3) = 5x + 8

(-6 + 3x) = 5x + 8

Reorder the terms:

-6 + 3x = 8 + 5x

Solving

-6 + 3x = 8 + 5x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-5x' to each side of the equation.

-6 + 3x + -5x = 8 + 5x + -5x

Combine like terms: 3x + -5x = -2x  

-6 + -2x = 8 + 5x + -5x

Combine like terms: 5x + -5x = 0

-6 + -2x = 8 + 0

-6 + -2x = 8

Add '6' to each side of the equation.

-6 + 6 + -2x = 8 + 6

Combine like terms: -6 + 6 = 0

0 + -2x = 8 + 6

-2x = 8 + 6

Combine like terms: 8 + 6 = 14

-2x = 14

Divide each side by '-2'.

x = -7

Simplifying

x = -7

algol [13]3 years ago
6 0

Answer

x=-1/6

or

x=0.1 6¯

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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2 years ago
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Jesse has $3.40 in quarters and nickels. The number of nickels is 5 more than 2 times the number of quarters. How many quarters
dlinn [17]

Answer:

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Step-by-step explanation:

From the question

Jesse has $3.40 in quarters and nickels

Quarters = q = number of quarters

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nickels = n = number of nickels

1 nickel = $0.05

Hence,

0.25q + 0.05n = $3.40 .......Equation 1

The number of nickels is 5 more than 2 times the number of quarters.

n = 2q + 5

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0.25q + 0.05(2q + 5) = 3.40

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0.35q = 3.40 - 0.25

0.35q = 3.15

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Therefore, Jessie has 9 quarters.

3 0
3 years ago
Please take a look at the picture
Debora [2.8K]

\tiny \text{yes \: looked}

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3 years ago
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2769.44
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Noah says to find 20% of a number he divides the number by 5. Is this true explain your answer
Nutka1998 [239]

Answer:

yes

Step-by-step explanation:

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Hence to find 20% of a number, dividing the number by 5 is correct

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